china has been a major gap in this whole system. on sanctions and north korea could face tougher action from china might constrict some of its ability to buy things that it absolutely needs for its nuclear programs. jon: you think it is likely american-made technology is helping north korea with its missile program? >> could be. i don't know the missile program nearly as well as the nuclear but what north korea does, it uses china a sense as a transshipment point because many companies, high-tech companies from america, from europe, have subsidiaries in china, selling to chinese industries and trading companies. north korea works that system very well to end up with those kinds of high-tech items from outside china. and so while i can't speak specifically on the missile program i certainly can on the nuclear and yes, indeed, north korea buys european high-tech equipment and likely u.s. equipment. so it's a problem. china has been made aware of the problem but they haven't done enough and, i think this missile launch could be a furth